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Water Quality and Flow Characteristics of Barton Springs Abby Tomasek

Water Quality and Flow Characteristics of Barton Springs Abby Tomasek. http://www.ci.austin.tx.us/watershed/ordinances.htm. Barton Springs Pool. Main discharge point for the Barton Springs segment of the Edwards Aquifer Main aquifer recharge comes from 6 surface streams

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Water Quality and Flow Characteristics of Barton Springs Abby Tomasek

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  1. Water Quality and Flow Characteristics of Barton SpringsAbby Tomasek http://www.ci.austin.tx.us/watershed/ordinances.htm

  2. Barton Springs Pool • Main discharge point for the Barton Springs segment of the Edwards Aquifer • Main aquifer recharge comes from 6 surface streams • During dry periods, the flow is dominated by water from the aquifer matrix • During wet periods, flow is dominated by stream discharge • Implications for water quality concerns

  3. Why do we care? • The salamander! • Water quality important for the health and safety of visitors • Aesthetics (for example eutrophication and turbidity) http://www.ci.austin.tx.us/watershed/bartonsprings_salamander.htm

  4. Data • Edwards aquifer and surrounding HUC-10 subwatersheds • DEM and hillshade to visualize topography for area • Added main contributing surface waters from NHD flowlines • Determined contributing area and compared to City of Austin data • Land use and population data • USGS NWIS for streamflow and water quality data

  5. Edwards Aquifer and Contributing Areas

  6. Land Use Change from 1990-2008 1990 2008

  7. Population in Contributing Area

  8. Discharge Along Barton Creek

  9. Flooding at Barton Creek and Barton Springs

  10. Nitrate and Phosphorous Concentrations along Barton Creek

  11. Barton Springs Continuous Water Quality Data

  12. Summary and Next Steps • Area surrounding Barton Springs has experienced rapid population growth and land use change • Unique flow system of Barton Springs creates sensitivity to change • Obviously cannot stop development, but increased awareness can help preserve health of system • Investigate more nutrient parameters and contaminants (i.e. atrazine and tetrachloroethane) • Expand analysis to entire contributing area

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